I want first 20 elements mass no or atomic no
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Answered by
1
Hydrogen
Helium
Lithium
Beryllium
Boron
Carbon
Nitrogen
Oxygen
Fluorine
Neon
Sodium
Phosphorus
Sulphur
Chlorine
Argon
Potassium
Calcium
Hope this helps :))
Helium
Lithium
Beryllium
Boron
Carbon
Nitrogen
Oxygen
Fluorine
Neon
Sodium
Phosphorus
Sulphur
Chlorine
Argon
Potassium
Calcium
Hope this helps :))
Pavithraaruna:
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